Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Instapaper is the simplest way to save and store articles for reading: offline, on-the-go, anytime, anywhere, perfectly formatted
Free · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Instapaper: map the core News workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Users often find the search functionality limited and not comprehensive.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Offline reading feature can be inconsistent.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options for text size and themes.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: The subscription model can be unclear and frustrating.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Instapaper is the simplest way to save and store articles for reading: offline, on-the-go, anytime, anywhere, perfectly formatted. Instapaper for iPhone, iPad, and iPod touch provides a mobile-optimized text view that makes reading Internet content a clean and uncluttered experience. Instapaper also enhances the standard reading experience with features like text-to-speech. Instapaper has been inducted into the iPhone and iPad Hall of Fame, received Macworld Editor's Choice Award, and has also been featured in publications including Wired, TIME, Daring Fireball, and The Verge, among others. Core Features: - Strip away all clutter and save the content of web pages into iOS-optimized formatting. - Read anywhere! No internet, no problem: access your articles on airplanes, subways, elevators, or Wi-Fi-only devices away from Internet connections. - Save to Instapaper from other iOS applications with one tap. Additional Features: - Control every aspect of your reading experience with a variety of font, color themes, and spacing options. - Find that great quote you want to remember and share? Instapaper makes it easy to highlight and add notes to text in any article. - Have your Instapaper articles narrated to you with text-to-speech. Just turn up the volume on your iPhone, iPad, or iPod touch and relax! - Sort your list of articles by popularity, date, and article length. - Folders for easy organization. Instapaper also offers an optional Instapaper Premium subscription for $5.99/month or $59.99/year. With Instapaper Premium you receive: - Full-text search for articles in your account - Unlimited highlights and notes. - Text-to-speech Playlist to seamlessly listen to multiple articles. - Unlimited use of the speed reading feature to help you get through articles up to 3x faster. On sign up for Instapaper Premium, payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of service: https://www.instapaper.com/terms Privacy policy: https://www.instapaper.com/privacy
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.